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The Programming Languages of the SAP Web Application Server. While this approach may seem simple and logical at first glance, it harbors several disadvantages. The most serious of these is the fact that this approach does not comply with defined J2EE standards, as it would require the existence of an ABAP instance—which is extremely unlikely for a pure J2EE environment, which are used widely in enterprise projects outside of SAP Systems. Moreover, merging ABAP and Java tables would require Java developers to follow ABAP conventions that ensure data consistency, such as those for lock management or update requests.
Strict separation of ABAP and Java persistence Each personality has its own isolated database schema, characterized by two logically—or even physically—separated databases. No transaction can extend over both schemas; a Java application can access ABAP data, but not at the database level. In other words, table
accesses between the ABAP and Java stacks are not possible. SAP tutorial. Instead, they are performed at the business logic level or its encapsulating middleware, for example, via Remote Function Call (RFC) by means of the Java Connector (JCo). Therefore, the collaboration has to take place at component level at this point.
Tags : sap web application server, web application server, java stacks, sap systems, logic level, database schema, abap developer, java connector, java content, enterprise projects, java developers, database level, business logic, strict separation, first glance
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